Django:创建类似于管理界面的内联表单集 [英] Django: Creating an Inline Formset Similar to the Admin Interface
问题描述
我是Django新手,我对在生产代码中重用管理界面的内联表单集有疑问。考虑以下模型:
I'm a Django newbie, and I have a question about reusing the inline formset of the admin interface in the production code. Consider the following model:
class Attribute(models.Model):
name = models.CharField(max_length=50)
class Person(models.Model):
lastName = models.CharField(max_length=50)
firstName = models.CharField(max_length=50)
email = models.CharField(max_length=50)
attributes = models.ManyToManyField(Attribute, through='AttributeValue')
class AttributeValue(models.Model):
person = models.ForeignKey(Person, on_delete=models.CASCADE)
attribute = models.ForeignKey(Attribute, on_delete=models.PROTECT)
isConsumer = models.BooleanField()
value = models.CharField(max_length=50)
管理界面非常漂亮。我使用了以下admin.py:
The admin interface for this comes out beautifully. I used the following admin.py:
class AttributeValueInline(admin.TabularInline):
model = AttributeValue
extra = 3
class PersonAdmin(admin.ModelAdmin):
list_display = ('lastName', 'firstName','email')
fieldsets = [
('Name', {'fields': ['firstName', 'lastName']}),
('Contact Info',{'fields': ['email','phoneNumber']})
]
inlines = [AttributeValueInline]
admin.site.register(Person, PersonAdmin)
admin.site.register(Attribute)
这几乎正是我想要的。看起来像这样:
This is almost exactly what I want. It looks like this:
当我试图在非管理员网站中实现相同功能时,除了实际的业务逻辑之外,我不得不编写大量代码来进行内联表单集,表单处理。除此之外,我还遇到了此处所提到的问题。
When I tried to implement the same in the non-admin website, I had to write quite a bit of code to do the inline formsets, form processing, in addition to the actual business logic. In addition to this, I faced the problem mentioned here.
我无法向最终用户公开管理界面,因为我们需要定制的Web设计和页面流。但是,我可以重用管理界面代码的一部分而不是重新实现相同的功能吗?
I can't expose the admin interface to the end-user because we need to have a customized web design, and page flow. But, can I reuse parts of the admin interface code instead of re-implementing the same functionality?
任何其他减少代码的建议都将受到欢迎。
Any other suggestions to reduce the code would be most welcome.
推荐答案
这是如何实现内联表单集的答案,例如Django admin
http://kevindias.com/writing/django-class-based-views-multiple-inline-formsets/
但是仅描述了CreateWiew。如果您还想实现UpdateView,则需要做一些修改来复制代码
Here is the answer how to implement inline formsets like in Django admin http://kevindias.com/writing/django-class-based-views-multiple-inline-formsets/ However only CreateWiew is described. If you want to implement also UpdateView you need to do duplicate your code for it with a little tweaks
def get(self, request, *args, **kwargs):
"""
Handles GET requests and instantiates blank versions of the form
and its inline formsets.
"""
self.object = self.get_object()
form_class = self.get_form_class()
form = self.get_form(form_class)
sample_form = SampleFormSet(instance=self.object)
return self.render_to_response(
self.get_context_data(form=form,
sample_form=sample_form))
def post(self, request, *args, **kwargs):
"""
Handles POST requests, instantiating a form instance and its inline
formsets with the passed POST variables and then checking them for
validity.
"""
self.object = self.get_object()
form_class = self.get_form_class()
form = self.get_form(form_class)
sample_form = SampleFormSet(self.request.POST, instance=self.object)
if (form.is_valid() and sample_form.is_valid()):
return self.form_valid(form, sample_form)
else:
return self.form_invalid(form, sample_form)
def form_valid(self, form, sample_form):
"""
Called if all forms are valid. Creates a Recipe instance along with
associated Ingredients and Instructions and then redirects to a
success page.
"""
self.object = form.save()
sample_form.save()
return HttpResponseRedirect(self.get_success_url())
不要忘了在模板中添加DELETE表单集字段
and don`t forget to add DELETE formset field to your template
{% for form in sample_form %}
{{ form.id }}
<div class="inline {{ sample_form.prefix }}">
{{ form.description.errors }}
{{ form.description.label_tag }}
...
{{ form.DELETE }}
</div>
{% endfor %}
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